ABSTRACT
To determine the interface characterization of geogrid inclusion, soil-geogrid interaction is of particular importance. Tensile strength, tensile strain, and interfacial shear stress are all characteristics induced along with geogrid reinforcement. In this paper, a series of small-scale physical modeling has been carried out to investigate the stress-strain behavior and deformation of geogrid after final loading. Therefore, a simplified expression model has been developed to model the behavior of tensile stress-strain of geogrid inclusion. This simple model is similar to the Mohr-Coulomb model that is used in the nonreinforced soil. In general, the results have been confirmed by experimental testing and are consistent with the analytical results. In the main results, it is demonstrated that strains and deflections induced within two layers of geogrid inclusions are less than those induced within one layer. In addition, the tensile force induced in the first geogrid sheet is larger than that in the second geogrid layer.
